2006 Renault Laguna P0235 Fault Code Reappears After MAP Sensor Replacement - How to Fix?

Model: 2006 Renault Laguna Fault Code: P0235 Posted: 2016-10-03 10:30

Hi everyone, I'm experiencing a persistent P0235 fault code on my 2006 Renault Laguna 2 1.9 dCi -130 model. The error appears in Torque Pro via my Chinese OBD-II Bluetooth scanner. Previously, the ECU displayed 'Check Injection' and I noticed significant power loss, especially during acceleration — there were noticeable 'holes' in performance even without the warning message. I replaced the Mass Air Flow (MAP) sensor to address this issue, and after the replacement, both the symptoms and the P0235 error initially disappeared. However, when I tried to clear the fault code using Torque Pro, it reappeared immediately. There is still a slight power loss present. I'm wondering what else could be causing this — could there be an issue with the turbocharger boost sensor wiring, grounding, or another component? Any experience with P0235 on Renault Laguna 1.9 dCi engines? Thanks for any insights or troubleshooting tips!